EP1508466A1 - Système d'entraínement à toutes roues motrices - Google Patents

Système d'entraínement à toutes roues motrices Download PDF

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Publication number
EP1508466A1
EP1508466A1 EP03018906A EP03018906A EP1508466A1 EP 1508466 A1 EP1508466 A1 EP 1508466A1 EP 03018906 A EP03018906 A EP 03018906A EP 03018906 A EP03018906 A EP 03018906A EP 1508466 A1 EP1508466 A1 EP 1508466A1
Authority
EP
European Patent Office
Prior art keywords
clutch
vehicle
wheel drive
control system
torque
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03018906A
Other languages
German (de)
English (en)
Inventor
Kenneth Ekström
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to EP03018906A priority Critical patent/EP1508466A1/fr
Publication of EP1508466A1 publication Critical patent/EP1508466A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/02—Control of vehicle driving stability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/348—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed
    • B60K17/35—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/02—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for main transmission clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B60K23/0808—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18145—Cornering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18109—Braking

Definitions

  • the present invention refers to an all wheel drive system for a vehicle according to the preamble of claim 1.
  • All wheel drive systems often includes torque transfer to the front wheels in addition to which torque transfer to the rear wheels is controlled by an electrically controllable clutch.
  • the rear wheels can not rotate faster than the front wheels in a so called power on situation, e.g. when the vehicle is accelerating. On high friction surfaces this can result in an understeer behavior of the vehicle in power on situations, which a driver might experience as a poor handling "feeling" of the vehicle.
  • One way of solving this problem is to provide different gear ratios to the front and rear wheels, for example by means of suitable relative arrangement of bevel gear angle drives for rear and front wheels. However, this might introduce heat and wear problem in the drivetrain and on the tires.
  • Another problem with a high ratio of torque provided to the front wheels is that it can enhance torquesteering tendencies of the vehicle, which impairs the handling characteristics of the vehicle, and can even be detrimental to the driving safety.
  • US5443429 describes a powershifting transfer case with one clutch for each of two output shafts, coupled to the front and rear axle, respectively.
  • a disadvantage with such an arrangement is that it is difficult or impossible to fit in an existing geometry of a vehicle in production, in which it is desired to implement an all wheel drive system, or to improve an existing all wheel drive system.
  • a distribution case, such as the one described in US5443429 requires a lot of space in one area of the vehicle, typically somewhere between the front and rear wheel axles, and this makes it difficult to integrate even in a new model of vehicle.
  • the second clutch provided for control of transfer of torque to the front wheels makes it possible for the vehicle to be fully front wheel driven, fully rear wheel driven, or driven with any torque ratio between the front and rear wheels.
  • a higher ratio of torque provided to the rear wheels will reduce torquesteering tendencies, resulting in improved handling characteristics of the vehicle, and possibly an improvement of the driving safety.
  • Optimizing the torque on the front wheels will improve the steering "feeling" as experienced by a driver of the vehicle.
  • the first and second clutch are located in different areas of the vehicle. This provides a lot of flexibility during the implementation of the all wheel drive system, and problems of integration due to space limitation can more easily be solved than in the employment of a central distribution case for the power transfer.
  • the second clutch is located between a differential for the front wheels and one of the front wheels.
  • the clutch can reduce torque on the front axle and since the differential gives approximately the same torque on the left and the right front wheel, the torque on the front axle is distributed evenly.
  • the all wheel drive system can be readily integrated in a vehicle model, without the need for major design alterations of the model.
  • the embodiment presents a simplified design.
  • the first clutch and the second clutch are connected to and activation thereof controllable independently by an electronic control system.
  • the electronic control system can be adapted to receive signals corresponding to status information of suitable parameters, such as accelerator pedal setting, vehicle speed, engine rpm, output torque, lateral acceleration, actual and target yaw speed, etc, obtained in manners known in the art.
  • suitable parameters such as accelerator pedal setting, vehicle speed, engine rpm, output torque, lateral acceleration, actual and target yaw speed, etc, obtained in manners known in the art.
  • the yaw behavior of the vehicle can be determined at least partly based on signals from a steering wheel angle sensor and a gyro. Based on such information the electronic control system can determine suitable clutch activations and send control signals independently to the first and the second clutch so as for torque to be distributed between the front and the rear wheels in a manner suitable for driving and operation conditions at hand.
  • the electronic control system is adapted so that, in an engine braking situation, it sends signals to the first and the second clutch, so as to optimize the yaw behavior of the vehicle.
  • Optimizing the yaw behavior of the vehicle in an engine braking situation means minimizing tendencies towards understeer or oversteeer.
  • An understeer behavior in an engine braking situation will be the result if there is too much torque on the front wheels in relation to the rear wheels, which will cause front wheels to rotate slower than the rear wheels, or even slide, in turn causing an understeer behavior.
  • the percentage of torque distributed to the rear wheels is increased, which will decrease the wheel speed difference between the front and the rear wheels, in turn reducing the understeer behavior.
  • Increasing the percentage of torque distributed to the rear wheels could be accomplished by increasing the torque to the rear wheels and/or decreasing the torque to the front wheels.
  • torque distribution to the front wheels is decreased and torque distribution to the rear wheels is increased.
  • the control of the clutches can be based at least partly on the detected wheels speeds, and actual and target yaw speed of the vehicle.
  • the electronic control system is adapted so that, in an engine braking situation, it sends signals to the first and the second clutch, so as to minimize the risk of wheel sliding.
  • This can be advantageous in situations where there is a risk of wheel slide, even if the ratio of torque between the front and rear wheels is well adjusted, for example during snowy and/or icy road conditions. Thereby, the torque to both front and rear wheels could be decreased, or even terminated.
  • the electronic control system could adjust the torque so that wheel slide is avoided, but an engine brake force is still distributed.
  • the electronic control system is adapted so that, in an engine braking situation, the electric control system sends signals to the first and the second clutch so that the torque distribution to the front and rear wheels corresponds to the weight distribution to the front and rear wheels.
  • Distributing torque to the front and rear wheels corresponding to the weight distribution to the front and rear wheels may be a good starting point of the control system in an engine braking case.
  • Subsequent torque distribution can be made so as to optimize the yaw behavior of the vehicle, as described above. Since the vehicle weight distribution on front and rear axles approximately corresponds to the friction forces acting on the tires in an engine braking situation, distributing the torque accordingly will reduce the risk of wheels sliding.
  • At least one of the first clutch and the second clutch is arranged so that the clutch can be biased to an engaging condition independently of signals from the electronic control system. This will secure torque being delivered to at least the front wheels or the rear wheels in case of failure or malfunction of the electronic control system.
  • the arrangement can be accomplished by a mechanical pre-tension on the clutch, against which a clutch actuation device act based on signals from the control system. If signals from the control system are no longer received by the clutch actuation device, the pre-tension will urge the clutch to an engaged condition, i.e. a condition in which the clutch transfers torque to its full capacity. This will prevent the vehicle from loosing its propulsion in case of a failure of the electronic control system.
  • Said arrangement with the clutch being biased to an engaging condition, independently of signals from the electronic control system, can be implemented in the first clutch or in the second clutch, or in both. If said arrangement is implemented in one of the clutches only, it is preferred that it is implemented at the second clutch, provided for control of transfer of torque to the front wheels. This is more advantageous from a driving safety point of view, than the arrangement being implemented for the rear wheels only.
  • the electronic control system is adapted to send at least one signal to at least one of the first clutch and the second clutch so as to decrease torque transfer to the respective wheels, or to disengage the clutch, in case of activation of a braking system of the vehicle.
  • the vehicle engine can still be connected to the wheels. This can be due to the driver not having disengaged the gearbox clutch at brake pedal maneuvering, or the vehicle being equipped with an automatic transmission. This will result in a decrease of the braking performance since a part of the braking forces will be used to decrease the rotation speed of the engine.
  • the electronic system is adapted to send at least one signal to at least one of the first clutch and the second clutch so as to decrease torque transfer to the respective wheels, or to disengage the clutch, in case of activation of an anti-lock braking system of the vehicle.
  • ABS anti-lock braking system
  • the vehicle is equipped with an anti-lock braking system (ABS) it can be disadvantageous to allow engine braking simultaneously with activation of the anti-lock braking system, since this might cause vibrations in the vehicle. The decrease of torque transfer or disengagement of the clutches will prevent such vibrations.
  • the electronic system is adapted to send at least one signal to at least one of the first clutch and the second clutch so as to decrease torque transfer to the respective wheels, or to disengage the clutch, in case of activation of an electronic vehicle stability system of the vehicle.
  • the electronic vehicle stability system could be ESP (Electronic Stability Program), VDC (Vehicle Dynamic Control), VSC (Vehicle Stability Control), DSTC (Dynamic Stability and Torque Control), DSC (Dynamic Stability Control), ATTS Automatic Torque Transfer System), or VSA (Vehicle Stability Assist), or any other system adapted to aid vehicle stability.
  • Such an electronic vehicle stability system might include, according to known art, capability of suitable individual activation of wheel brakes.
  • the torque transfer to front or rear wheels may interfere with the action of the electronic vehicle stability system so as to render a vehicle stabilizing effort by the electronic vehicle stability system difficult.
  • the decrease of torque transfer or disengagement of the clutches will prevent such interference.
  • the electronic control system is adapted send at least one signal to at least one of the first clutch and the second clutch based on at least one activity of a spin control system of the vehicle.
  • the activation of the first and second clutch may be dependent upon an interaction between the clutch control system and the spin control system. This might avoid the two systems working against each other, so as to decrease the result of intended actions of either or both systems. It might also avoid actions of one system having a stronger result than intended by that system, due to an action by the other system working in the same direction.
  • the electronic control system is adapted send at least one signal to at least one of the first clutch and the second clutch based on at least one activity of an automatic transmission control system of the vehicle.
  • the activation of the first and second clutch may be dependent upon an interaction between the clutch control system and the automatic transmission control system. This will improve the gear shifting quality and reduce wear in the gearbox, especially in high performance cars.
  • fig. 1 is a schematic illustration of a drivetrain in a vehicle with an all wheel drive system according to a preferred embodiment of the invention.
  • Fig. 1 shows schematically a drivetrain 1 in a vehicle with an all wheel drive system according to a preferred embodiment of the invention.
  • a vehicle engine 2 and gearbox 3 are connectable to a left 4 and right 5 front wheel via a front differential 6, left 7 and right 8 front drive shafts, and drive shaft joints 7a, 8a.
  • a drive shaft support bearing 8b is provided for the right front drive shaft 8.
  • the vehicle engine 2 and gearbox 3 are connectable to a left 9 and right 10 rear wheel via a front bevel gear 11, a cardan shaft 12, a rear bevel gear 13, a rear differential 14, left 15 and right 16 rear drive shafts, and drive shaft joints 15a, 16a.
  • the all wheel drive system comprises a first clutch 17 between the front bevel gear 11 and the rear bevel gear 13, for control of transfer of torque to the rear wheels 9, 10.
  • the first clutch 17 is a controlled wet multiplate clutch.
  • the first clutch 17 is connected to and activation thereof controllable by an electronic control system 18.
  • the electronic control system 18 can activate a clutch actuation device, e.g. in the form of a stepper motor-driven relief or "throttle" valve, to govern a coupling hydraulic pressure of the first clutch 18, and thus the percentage of torque transferred to the rear wheels can be controlled.
  • a second clutch 19 is provided for control of transfer of torque to the front wheels 4, 5.
  • the second clutch 19 is located between the front differential 6 and the right the front wheel 5.
  • the torque is distributed approximately evenly to the front wheels 4, 5 by the front differential 6.
  • the second clutch 19 e.g. between the front differential 6 and the left front wheel 4.
  • the gearbox 3 is located on the left side of the vehicle, there is plenty of space available for the second clutch 19 between the front differential 6 and the right front wheel 5.
  • the second clutch 19 is located between the drive shaft support bearing 8b, but the presence of the bearing 8b or the location of the clutch 19 in relation thereto is not essential, and alternative arrangements of the second clutch are possible, whereby the arrangement can be chosen taking into account space considerations in the vehicle model in question.
  • the second clutch 19 is of the same or a similar type as the first clutch 17, see above.
  • the second clutch 19 is also connected to and activation thereof controllable by an electronic control system 18, whereby it receives signals from the electronic control system 18 independently of the first clutch 17, and vice versa.
  • the percentage of torque transferred to the front wheels can be controlled independently of the percentage of torque transferred to the rear wheels.
  • the first and the second clutches are adapted to transfer torque according to a plurality of individual torque ratios.
  • the electric control system could send signals, based on information received, to the first 17 and/or second 19 clutch so as to provide a higher torque transfer to the rear wheels 9, 10 than the front wheels 4, 5.
  • the electric control system could send signals, based on information received, to the first 17 and/or second 19 clutch so as to provide a higher torque transfer to the rear wheels 9, 10 than the front wheels 4, 5.
  • the electric control system could send signals, based on information received, to the first 17 and/or second 19 clutch, so as to provide a higher torque transfer to the rear wheels 9, 10 than to the front wheels 4, 5, or so that the torque distribution to the front and rear wheels corresponds to the weight distribution to the front and rear wheels, in order to minimize the risk of wheels sliding.
  • the second clutch 19 is arranged so that there is a mechanical pre-tension, against which the clutch actuation device act based on signals from the electronic control system 18. If signals from the electronic control system are no longer received by the clutch actuation device, the pre-tension will urge the clutch to an engaged condition, i.e. a condition in which the clutch transfers torque to its full capacity. Such an arrangement to secure torque transfer in case of failure of the electronic control system 18 can also be provided on the first clutch 17. It should be noted that, besides a mechanical pre-tension, other failure backup solutions are possible to implement within the scope of the present invention.
  • the electric control system could send signals, based on information received corresponding to the activation of the braking system, to the first 17 and/or second 19 clutch, so as to decrease torque transfer to the respective wheels, or to disengage the clutches. As described above, this will improve the braking performance of the vehicle, and reduce wear on parts of the braking system and vehicle drivetrain.
  • the electric control system could send signals, based on information received corresponding to the activation of the anti-lock braking system, to the first 17 and/or second 19 clutch, so as to decrease torque transfer to the respective wheels, or to disengage the clutches. As described above, this will prevent vibrations in the vehicle.
  • the electric control system could send signals, based on information received corresponding to the activation of the electronic vehicle stability system, to the first 17 and/or second 19 clutch, so as to decrease torque transfer to the respective wheels, or to disengage the clutches. As described above, this will prevent the torque transfer to front or rear wheels interfering with the action of the electronic vehicle stability system.
  • the electric control system could send signals to the first 17 and/or second 19 clutch, based on information received corresponding to the activation of the spin control system. As described above, this will avoid the spin control system and the all wheel drive system working against each other.
  • the electric control system could send signals to the first 17 and/or second 19 clutch, based on at least one activity of an automatic transmission control system of the vehicle. As described above, this will improve the gear shifting quality and reduce wear in the gearbox, especially in high performance cars.
  • the invention is also applicable in cases of vehicles with the engine mounted in other locations than in the front, as described above, e.g. vehicles with the engine mounted in the back of the vehicle.
  • a first clutch for control of transfer of torque to the front wheels
  • a second clutch is provided for control of transfer of torque to the rear wheels, whereby the second clutch could be located between a differential for the rear wheels and one of the rear wheels.
  • the first and second clutch 17, 19 can also be used as clutches in a launch system for the vehicle, and during gear changes in the vehicle drivetrain.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
EP03018906A 2003-08-20 2003-08-20 Système d'entraínement à toutes roues motrices Withdrawn EP1508466A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03018906A EP1508466A1 (fr) 2003-08-20 2003-08-20 Système d'entraínement à toutes roues motrices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03018906A EP1508466A1 (fr) 2003-08-20 2003-08-20 Système d'entraínement à toutes roues motrices

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EP1508466A1 true EP1508466A1 (fr) 2005-02-23

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2411215A (en) * 2004-02-17 2005-08-24 Ford Global Tech Llc A control system allows a clutch to slip when a sudden braking event occurs
EP1674320A1 (fr) * 2004-12-22 2006-06-28 Fuji Jukogyo Kabushiki Kaisha Dispositif de transmission pour véhicule à quatre roues motrices
GB2411446B (en) * 2004-02-17 2007-09-19 Ford Global Tech Llc Reducing powertrain reaction torque
US7628242B2 (en) 2007-04-06 2009-12-08 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Vehicle limited slip differential
CN102529706A (zh) * 2010-12-17 2012-07-04 通用汽车环球科技运作有限责任公司 保护动力系构件免于由于车轮抱死的过度力损害的方法和设备
US8285465B2 (en) 2009-06-30 2012-10-09 Robert Bosch Gmbh Cooperative traction control system using dual slip controllers
WO2013117432A1 (fr) * 2012-02-09 2013-08-15 Ford Global Technologies, Llc Système de propulsion tout-terrain pour véhicule automobile
CN105307891A (zh) * 2013-06-07 2016-02-03 奥迪股份公司 用于全轮驱动的机动车的驱动传动系
WO2016038465A1 (fr) * 2014-09-12 2016-03-17 Magna Powertrain Of America, Inc. Groupe motopropulseur transversal toutes roues motrices comprenant un champ de polarisation de roue arrière
CN106347120A (zh) * 2015-07-17 2017-01-25 邓召朋 机械四驱传动轴的齿式离合器同步保护机构
CN107914585A (zh) * 2017-11-22 2018-04-17 江西爱驰亿维实业有限公司 基于超级电容的电动汽车动力系统及控制方法、系统、控制器
JP2019202706A (ja) * 2018-05-25 2019-11-28 株式会社Ｓｕｂａｒｕ 車両

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0352994A1 (fr) 1988-07-28 1990-01-31 Fuji Jukogyo Kabushiki Kaisha Système de transmission de force motrice pour un véhicule avec entraînement à quatre roues
JPH04278832A (ja) * 1991-01-18 1992-10-05 Mitsubishi Automob Eng Co Ltd 駆動状態表示装置
US5443429A (en) 1993-11-30 1995-08-22 Dana Corporation Automatic powershifting transfer case for a vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0352994A1 (fr) 1988-07-28 1990-01-31 Fuji Jukogyo Kabushiki Kaisha Système de transmission de force motrice pour un véhicule avec entraînement à quatre roues
JPH04278832A (ja) * 1991-01-18 1992-10-05 Mitsubishi Automob Eng Co Ltd 駆動状態表示装置
US5443429A (en) 1993-11-30 1995-08-22 Dana Corporation Automatic powershifting transfer case for a vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 077 (M - 1367) 16 February 1993 (1993-02-16) *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2411446B (en) * 2004-02-17 2007-09-19 Ford Global Tech Llc Reducing powertrain reaction torque
GB2411215B (en) * 2004-02-17 2008-03-05 Ford Global Tech Llc System for limiting reactive torque in powertrains
GB2411215A (en) * 2004-02-17 2005-08-24 Ford Global Tech Llc A control system allows a clutch to slip when a sudden braking event occurs
EP1674320A1 (fr) * 2004-12-22 2006-06-28 Fuji Jukogyo Kabushiki Kaisha Dispositif de transmission pour véhicule à quatre roues motrices
US7628242B2 (en) 2007-04-06 2009-12-08 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Vehicle limited slip differential
US8285465B2 (en) 2009-06-30 2012-10-09 Robert Bosch Gmbh Cooperative traction control system using dual slip controllers
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